64605631142 has 16 divisors (see below), whose sum is σ = 104434829520. Its totient is φ = 29797444512.

The previous prime is 64605631099. The next prime is 64605631193. The reversal of 64605631142 is 24113650646.

It is a junction number, because it is equal to n+sod(n) for n = 64605631096 and 64605631105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 817292 + ... + 892847.

It is an arithmetic number, because the mean of its divisors is an integer number (6527176845).

Almost surely, 2^64605631142 is an apocalyptic number.

64605631142 is a deficient number, since it is larger than the sum of its proper divisors (39829198378).

64605631142 is a wasteful number, since it uses less digits than its factorization.

64605631142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711607.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 64605631142 in words is "sixty-four billion, six hundred five million, six hundred thirty-one thousand, one hundred forty-two".